略語大辞典 [Chem] 25 TTT time temperature tolerance 許容温度時間. 温度時間許容度. 食品の鮮度が保たれる範囲.time temperature tolerance; a condition in which the freshness of a food is kept; [Chem:Food]. 丸善「略語大辞典」JLogosID : 11854540